Spraying device



June 21, 1932. H, E, DUNN 1,863,924

SPRAYING DEVICE Fi1ed April 28, 1930 'lL--ni n @Troma device of my invention.

Patented June 21, 1932 UNITED STATES PATENT OFFICE HARRY E. DUNN, 0F HOLLAND, MICHIGAN, ASSIGNOR TO W. E. DUNN MANUFACTURING COMPANY, OF HOLLAND, MICHIGAN, A CORPORATION OF MICHIGAN srnax'ING DEVICE Application led April 28,

This invention relates to a spraying device for the projecting of a liquid cementitious coating followed by facing dash material upon the surface of building blocks, walls or the like.

In the art of building, particularly masonry buildings, which involve building blocks, masonry walls and the like of various characters, it is desirable in a great many instances to apply dash material, so-called, to the blocks either before or after the same are laid in a masonry wall or to apply the dash material to solid walls, both for appearance purposes and for protection f the walls or blocks from moisture absorption, eiiioresence or the like. And it isa primary object and purpose of the present invention to provide a spraying device or gun by means of which this process may be very readily carried out.

In the process of applying the dash-material, which may be of various characters and of different colors as desired, a liquid cementitious composition is first sprayed onto the wall `followed by projecting the dash material onto and against the liquid cementitious coating first given to the wall or block. And with my invention a novel construction is provided with which both steps of the process may be readily accomplished, through verv minor and quickly changed adjustments of the device by which it is changed from a liquid cementitious sprayer to a dash projector. My invention comprises many novel constructions and combinations and arrangements of parts for effectively attain- .ing the ends stated in a simple and efiicient manner.

An understanding of the invention may be had from the following description, taken in connection withthe accompanying drawing, in which,

Fig. 1 is a side elevation of the spraying Fig. 2 is a front elevation thereof. Fig. 3 is a fragmentary enlarged longitudinal vertical section of the device showing the parts in position for projecting the dash material from the device, and

Fig. 4 is a view siniilar to Fig. 3 showing the parts of the device inposition for pro- 1930. Serial No'. 447,839.

jecting or spraying the liquid cementitious 4 composition. A

Like reference characters' refer to like parts in the'difierent figures of the drawing. In the construction, a barrel 1 adapted to be located horizontally is provided, which has a downwardly extending pistol like hang dle 2 integral therewith. n the front end of the barrel a projecting nozzle 3 is secured which has a passage therethrough, the inner portion of which has conical sides, indicated at 4, while the immediate projecting nipple 5 has a passage of smaller diameter than the opening through the barrel, as fully shown'in Fi 3 and Fig. 4.

t the rear end of the barrel the passage is reduced in size and the rear end 1s interiorly threaded so that packing 6 may be placed therein to be compressed by a gland 7, of the usual stuffing box construction, a tube 8 passing through the gland, the packing and the reduced portionv of the passage or opening through the barrel 1.

The tube at its front end is tapered, as indicated at 9, so as -to fit snugly against the tapered walls 4 previously described with reference to the passage through the -projecting nozzle 3. A suitable connector 10 is threaded onto the rear end of the pipe 8 to which a hose 1 1 for carrying compressed air is attached. A bar 12, secured to the underside and rear end portion of the barrel 1, extends rearwardly and has an upturned finger 12a which extends into the path of movement of the outwardly extending hexagonal flange on the connector 10 so that the pipe 8 may be withdrawn only until said fiange engages against the finger. That is,

the pipe 8 may occupy either of two extreme an opening therethrough to the interior. of

the barrel` to which a hopper 14 is'secured in which the liquid -cementitous material 15 is contained. At the front side of the hopper 14 a receptacle 16 for the dash material 17 is ermanently secured. This dash material is` ry and may consist of sand, finely crushed stone with or without coloring matter, or any other suitable material for the purpose.

At the lower end and front side o the receptacle 16 an outlet member 18 is located having an annular flange 19 near its free end ortion 20 which extends through the front wall of the receptacle 16 until stop ed by the flange 19 coming thereagainst. he tubular conduit 18 has a hollow arm 21 integral therewith located at right angles thereto which, at its free end, joins with an integral tubular nozzle member 22. This nozzle member 22 has a passage therethrough from its front or outer end connecting with the passages through the parts 21 and 18 and leading to the bottom of the receptacle 16 for the free passage o the dash material, and back of the point where the nozzle member 22 joins with the arm 21 the passage s of Venturi form, as indicated at 23. The inner end 22a of the nozzle member 22 is adapted to come directly in front ofA the outlet nipple 5 of the nozzle- 3 previously described when the dash outlet member and vnozzle are in lower position as shown in Fig. 3.

A bracket 24 is permanentl secured at its upper end to the` front side o the receptacle 16 and extends downwardly and forwardly, having a pointed screw seating in a conical recess made in -a boss 26 cast integral withv and projecting-from-the front end of the member 18 of the outlet where it joins with the arm- 21. By adjusting the screw 25 the rear end of the member 18 of the outlet is held snugly in position with. reference to the receptacle 16. Itis evident that this outlet-nozzle member for the dash material may be turnedl to either the lower position, as in Fi 3, or to an upper position, as shown in Flg. 4, and

will be rictionally held in either position to which turned.

In using the sprayingdevice of my Vinvention with the dash outlet nozzle member in p upper position, as in Fig. 4, the pipe 8 is Withdrawn so as to permit aiowof the liquid cementitious material `15..to the outlet nozzle 3, and such material is projected against a building block, wall or the like byy y the'pressure of compressed air escaping from the end of the tube 8.' The pressure (if the air is `not high, vusually about three pounds per square inch, but is eifective for projecting the liquid cementitious material from the hopper against a wall andbreaking it up and spraying it on the wall or block.

- After such step of the operation is completed, the tube .8 is moved forward to the position shown in Fig. 3, thereby cutting otf any flow of the liquid cementitious material and the'. dash outlet member turned to `lower position to bring the nozzle 22 into alinement with the first nozzle 3. The dash' material will drop downwardl partly by gravity and partly due to the injector action of compressed air passing and the dash material 1 be projected against the block, blocks or wall previously coated with the liquidcementitious material. The structure illustrated shows no wa for controlling the passage of compressedy air but this, obviously, may be done by any suitable valve means 1n the length of the conduit 11 leading to the tube 8.

The construction described is very practical and etlicient and with it, with the use of one device, both steps of a dash applying process may be readily carried out. When the dash nozzle outlet member is turned to upper position the dash material is held from escaping from its receptacle 16; and after operation on a wall or building block is completed, the dash outlet nozzle ymember is turned to upper position and the tube 8 moved to its closed position, shown in Fig. 3, thereby preventing any escape of either the dash material or the liquid cementitious material. The invention is` defined in the appended claims and is to be .considered comprehensive of all forms of` structure coming within their scope.

I claim:

1. In a device -of the class described, a barrel, an outlet nozzle at one end of the barrel, a hopper carried by the barrel in which liquid material may be contained to pass to said nozzle, a tube slidably mounted lengthwise of the barrel and movable into one position to close the outlet nozzle and into another position to open it, means for conducting compressed air to the tube to ass therethrough, a receptacle for holding ash material mounted at the front of said hopper, and an outlet nozzle member connected with the lower end of said receptacle and rotatable to an upper or a lower position, in the latter of which positions -it is in alinement with said outlet nozzle to the barrel.

2. In a device of the class described, a barrel, an outlet nozzle at one end of the barrel, said barrel being adapted to receive liquid material, a tube movably mounted in said barrel and movable into one position to close the outlet nozzle and into another position to open it, means for conducting pressure fluid to the tube to pass therethrough, a receptacle for holding dash material, and an outlet nozzle member connected with the receptacle and movable to an upper or a lower position, in the latter'of which positions it is in'alinement with said outlet nozzle to the barrel.

3. In a device of the class described, a tubularbarrel having a passage therethrough and a neck at its upper side having a passage to join with the passage to the barrel, a hopper secured to said neck, a tube extending into the barrel through one end thereof, packing lil means around the tube and in said end of the no 1,sles,924.

barrel through which a ltube passes and throu h which it may be longitudinally move a nozzle member at the outer end of the barrel, said tube being movable to engage with said nozzle member to close it against passage of material from the hopper or to an-v other position in which the nozzle is open for the passage of material from the hopper, means connected to the outer end of the tube for carrying com ressed air thereto for passage therethrougli, a receptacle located in front of said hopper, an outlet includin a hollow horizontal arm and a second ho ow arm located at right angles thereto with va horizontal nozzle member connected with said second arm, there being a continuous passage through said second nozzle member and arms of the outlet member, the lrst arm of the outlet member, being rotatably mounted' on the receptacle near its lower end and communicating therewith, said outlet member for slaid receptacle being movable about the horizontal axis of the first arm to u per and lower position, in the latter of w ich it is disposed in direct alinement with the first nozzle member.

4. In a structure of the class described,

means for holding a quantity of liquid ceinentitious material, an outlet nozzle therefor, a tube movably mounted with reference to said nozzle adapted to be moved to a position to close the nozzle against the passage of liquid cementitious material or to open it therefor, means for carrying compressed air to said tube to pass therethrough in either position of the tube, a rece tacle for dash material andan outlet mem r including a second nozzle rotatably mounted on said receptacle to be turned about a horizontal axis from an upper to a lower position or vice versa, the second nozzle lyin in alinement with the first outlet nozzle w en said outlet member is turned to lower position.

In testimony whereof I aiix mysi ature.

HARRY E. D 

